Tolumnia guianensis plate
Tolumnia guianensis from
The Orchid Album

Scientific Classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Subfamily: Epidendroideae
Tribe: Cymbidieae
SubTribe: Oncidiinae
Genus: Tolumnia
Raf. 1837
Type Species
Tolumnia pulchella

Tolumnia abbreviated as Tolu. in horticultural trade, is a genus that consist of 6 species.


The genus is distributed from Mexico, Florida USA, the Caribbean to northern South America.


The plants are small, usually epiphytic, with small or absent pseudobulbs completely covered by leaves, which are triangular or circular in cross section and overlap each other at base to resemble a fan (often termed “equitant”, which is something else.) The inflorescence arise between the leaf base and bear colorful, showy flowers. The labella are large, ornamented by variously shaped calli. The column bears prominent wings flanking the stigma.


Grow plants in intermediate to warm temperatures in partial shade to bright light. Water plant when mix drys. During the winter give plants a slight dryout between waterings. Water approximately once a week. Pot plants in a well drain medium of medium fir bark and perlite.


The genus is named after Tolumnius a character in Virgil's Aeneas


It was segregated from the mega-genus Oncidium by Guido Braem in 1986.

Species Edit